Introduction to DIAC

DIAC, an acronym for Diode for Alternating Current, serves as a bidirectional triggering device for both positive and negative directions.

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Construction of DIAC

The constructional arrangement of DIAC involves four layers, PNPN and PNPN’, with two terminals.

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Working Principle - Part (a)

When MT1 is positive with respect to MT2, the layers PNPN conduct. Conduction occurs when the voltage of MT1.

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Working Principle - Part (b)

In the scenario where MT2 is positive with respect to MT1, the layer PNPN’ conducts.

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V-I Characteristics of DIAC

The V-I characteristics of DIAC, depicted in the figure below, illustrate that when MT1 is positive.

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V-I Characteristics - Continued

When MT2 is positive with respect to MT1, the DIAC conducts current but in the opposite direction.

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Applications of DIAC

DIAC finds application in various circuits, primarily serving to turn on the TRIAC. Its usage extends to oscillator circuits.

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DIAC-TRIAC Combinations

Explore how the combination of DIAC and TRIAC is employed in intricate control circuits.

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Practical Implementations

Delve into real-world scenarios where DIAC is utilized in practical applications.

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Conclusion

with an emphasis on its significance in modern electronics and the continuous evolution of its applications.

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